Connection issues with Git

A problem has been identified with git that is widespread enough that we thought it would be a good idea to give everyone a heads up.

Short version: if you are suddenly having issues with git operations that connect to a server (so things like git pull, push, clone, etc), open up your git bash client and run `git update-git-for-windows`

Longer version: about a month ago, git released a version of git for Windows that resulted in a dead-lock when making request over SSH. However, a fixed version was released last week that corrects the problem. For reasons we don't currently understand, many people's git clients have suddenly decided to update to the older, buggy version of git (Even though it isn't the current one. Can't explain that either.) Fortunately, the fix is easy; you can just update your git client by opening the git bash client, and running `git update-git-for-windows`. This will download and install the actually current, and fixed, version of git.

To our knowledge, this is not an issue with CET Developer / Operator, but we're still investigating, just in case.